[x] add title of the tool ("Chromoscope") to homepage/overview. The sample count should be shown below the dropdown with the cohort selection or somewhere to the right of the screen.
[x] add a link to the GitHub repo that includes the word "GitHub" in addition to an icon
[x] add a link to documentation that includes the word "Docs" or better "Documentation" in addition to the icon
[x] add an About section/popup that also lists paper/preprint citation information once available
@sehilyi @dominikglodzikhms, related to #105: